A nearly 2,500-word online manifesto believed to belong to Roof, 22, was found in the days after he allegedly killed nine parishioners during a Bible study at a historically black church in Charleston, South Carolina on June 17, 2015.

In that writing, Roof detailed his disgust for blacks, Jews, Latinos and the American flag, which he said represents "people pretending like they have something to be proud [of] while white people are being murdered daily in the streets."